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Showing 1 to 7 of 7 for “"Iron group"”.
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Novel, High Activity Hydroprocessing Catalysts: Iron Group Phosphides
A series of iron, cobalt and nickel transition metal phosphides was synthesized by means of temperature-programmed reduction (TPR) of the corresponding phosphates. The same materials, Fe₂P, CoP and Ni₂P, were also prepared on a silica (SiO₂) support. The phase purity of these catalysts was …
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Tunable High-Field/ High-Frequency ESR and High-Field Magnetization on Single-Molecule Clusters
In this work, low dimensional iron group clusters have been studied by application of high magnetic fields. The magnetization has been probed with an MPMS as function of temperature and field. The combination with pulse field measurements up to 52\,T allowed determination of the magnetic exchange …
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Potassium cyanide inhibition of mixed bacterial populations
… is specific; cyanide irreversibly binds the iron group of cytochrome oxidase preventing transfer of electrons to oxygen. Hence, microbial sewage treatment processes may be severely disrupted by influx of cyanide bearing wastes. Cyanide toxicity was studied using a biological oxygen demand …
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Phonon spectra and thermal properties of some fcc metals using embedded-atom potentials /
By employing the embedded-atom potentials of Mei et ai.[l], we have calculated the dynamical matrices and phonon dispersion curves for six fee metals (Cu,Ag,Au,Ni,Pd and Pt). We have also investigated, within the quasiharmonic approximation, some other thermal properties of these metals which …
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Electrodeposition of FeCoNiCu quaternary system
… as a more general alloy system containing iron-group metals and a nonmagnetic element, Cu, which can be simplified and adapted to any binary or ternary systems. With a dilute tartrate sulfate bath nanometric multilayers were successfully fabricated with pulse plating and GMR value was …
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Effect of hot-iron branding on the cheek or upper hind limb on cortisol levels, behaviour and production in feedlot calves
Hot-iron branding on the upper hind limb in beef feedlot calves is a usual part of the processing procedure at arrival in many feedlots in South Africa. However, cheek branding is becoming more popular in feedlots due to ease of restraint and better visibility of the brand mark. However, the …
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Hydrogen-deficient central stars of planetary nebulae
… numbers. First analyses employing models without iron-line blanketing resulted in systematically different abundances for [WCL] and [WCE] stars. While the mass ratio of He:C is roughly 40:50 for [WCL] stars, it is 60:30 in average for [WCE] stars. The postulated evolution from [WCL] to [WCE] …